Fucking idiot:
"My first three weeks of listening to the JBLs were pretty miserable. They sounded rhythmically disjointed, grayish, soft, bass shy, and so incapable of creating a soundstage that I at first thought I had connected them out of phase. This confused me, because the Harman rep had informed me that these were demo units, presumably with many hours of use. Yet, after about 200 hours of play, the 4367s had improved dramatically, and after 300 they began to sound great. I later learned that the pair I received had only a few hours on them. Mystery solved."